Re: Initializing a very large int array?

From:
Eric Sosman <esosman@ieee-dot-org.invalid>
Newsgroups:
comp.lang.java.help
Date:
Tue, 07 Jul 2009 21:17:19 -0400
Message-ID:
<h30sbe$s5m$1@news.eternal-september.org>
Roedy Green wrote:

On Tue, 7 Jul 2009 12:02:27 -0700 (PDT), Sal <here@softcom.net> wrote,
quoted or indirectly quoted someone who said :

I have a very large number of precomputed hash values that I need to
use in a Java program. The problem is that since java won't accept
anything larger than 64k I can't initialize an array with the values.
I keep getting a "code too large" error. Any suggestions on how to
proceed?


Unfortunately, Java array initialisation is quite pedestrian. It
balloons the code. I don't think I have ever seen a language so
flat-footed.

Some kludges:

1. precompute your values at load time. static init.

2. store them in a resource, see
http://mindprod.com/jgloss/resource.html
You might use binary, text, or gzip format.

2. DataOutputStream the values, optionally with gzip then base64 them.
Then put the giant base 64 string in your program as a constant, and
decipher it at load time. See http://mindprod.com/jgloss/base64.hhtml


     Oh, goody! Base64, *squeezing* six bits of payload into
sixteen bits of packaging for a 267% space expansion ...

     Or in other words, "Ugh." Stick with #1 or #2(A).

--
Eric Sosman
esosman@ieee-dot-org.invalid

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